Cooler



FIG. 1 is an upper perspective view of a cooler;

FIG. 2 is a lower perspective view thereof;

FIG. 3 is front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view of thereof; and,

FIG. 8 is a bottom view thereof

The broken lines shown in the figures are for illustrative purposes onlyand form no part of the claimed design.

CLAIM The ornamental design for a cooler, as shown and described.